论文标题
对新观察物的信息内容的分析见解
Analytic insights on the information content of new observables
论文作者
论文摘要
不确定性定量已成为核科学中快速增长的领域。物理可观察物的理论预测通常涉及到受到实验室实验和天体物理观察结果限制不佳的区域的外推。没有正确量化的理论错误，这种模型预测的价值有限。同样，人们经常处理涉及基本数量的理论构造，而这些构建体无法访问实验或观察。在这种情况下，尤其重要的是纯中子物质的压力。在此贡献中，我们开发了一个分析框架，以回答“新数据如何减少当前理论模型的不确定性？”的问题。 [P.-G。 Reinhard和W. Nazarewicz，物理。 Rev. C81，051303（R）（2010）]。获得了简单而有见地的表达式，以量化一个或两个新的可观察到对理论不确定性的影响，这是两个关键量的：饱和密度时对称能量的斜率和核饱和度密度的两倍的纯中性基物质的压力。
Uncertainty quantification has emerged as a rapidly growing field in nuclear science. Theoretical predictions of physical observables often involve extrapolations to regions that are poorly constrained by laboratory experiments and astrophysical observations. Without properly quantified theoretical errors, such model predictions are of limited value. Also, one often deals with theoretical constructs that involve fundamental quantities that are not accessible to experiment or observation. Particularly relevant in this context is the pressure of pure neutron matter. In this contribution we develop an analytic framework to answer the question of "How can new data reduce uncertainties of current theoretical models?" [P.-G. Reinhard and W. Nazarewicz, Phys. Rev. C81, 051303(R) (2010)]. Simple and insightful expressions are obtained to quantify the impact of one or two new observables on theoretical uncertainties in two critical quantities: the slope of the symmetry energy at saturation density and the pressure of pure neutron matter at twice nuclear matter saturation density.
